/* Copyright 2022 Zinc Labs Inc. and Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
 */

package tokenizer

import (
	"github.com/blugelabs/bluge/analysis"
	"github.com/blugelabs/bluge/analysis/token"
	"github.com/blugelabs/bluge/analysis/tokenizer"
)

type LowerCaseTokenizer struct{}

func NewLowerCaseTokenizer() *LowerCaseTokenizer {
	return &LowerCaseTokenizer{}
}

func (t *LowerCaseTokenizer) Tokenize(input []byte) analysis.TokenStream {
	tokens := tokenizer.NewLetterTokenizer().Tokenize(input)
	filter := token.NewLowerCaseFilter()
	filter.Filter(tokens)
	return tokens
}
